When I first learned these motors had nylon plastic planetary gears, I thought I might swap them out for steel gears. After some time to take my motor apart, it appeared to me that the gears are not so difficult or expensive to replace when worn and the nylon plastic gears are much quieter than the metal gears. I think you've done a great job on your videos showing us how these powerful little motors work and can be serviced back to good as new again.
Thanks for this video it really helped me right now to service my motor, thought it was complex but I did it and eliminated the weird noise I was hearing
I was looking at you tear my wheel apart. Its exactly the same except for the tyre brand. I suspect there is a problem with mine too, so best I take it off and have a look. Thanks for showing us how.
My motor was vibrating so I took it apart and re greased it, the vibration practically went away but when I went on flat grass it came back and I was back to square 1. Any suggestions please?
Man I had a motor like this it made like this noice but when it was running lets say it was kinda running tho making that weird noice and I couldnt get it anymore off the like gears do you have a tip to take that thing off without the weird tool u have
I intend to change the bearings of my motor, the one on the cassette side is shaky while the other is perfect, the only issue now is how to get it out as I don’t have the right tool, do you think is should just let the bearing stay?
I recently bought a rear hub motor from ebay, but the rear cassette won't spin backwards after tightening it onto the hub, any ideas what it could be? it spins freely off the wheel but as soon as i tightening it i locks solid, and won't spin backwards, the company sent a replacement cassette and that one is doing the same problem, any advice would be much appreciated.
@@EbikeRepairs On Bafang motor diagram it shows the washer that has the locking bit on it, reversed from what the motor in the video has. The locking bit sticks outward and sits inside the forks.
mine is doing a similar noise to the left side but wheel spins as normal when motor is not engaged but soon as i peddle even with motor off the noise come back also my disc brake come loose as soon as it started i thought that was the noise till i tighten it back up so im thinking its the bearing closest to disc brake has given up after 3 year/ what are your thoughts?
@@EbikeRepairs iv even been hired to do other bikes and made some cash as iv found nearest hub service cost from £200 and up depending on brand not including replacement parts
I experienced a problem that suddenly the direction of the BLDC motor's rotation changed so that the motor rotated but the wheels did not rotate. Has anyone ever experienced something like that?
@@EbikeRepairs My controller doesn't have a self learning wire. the only thing there is is a cable to the BLDC motor/hall sensor and to the SW900 LCD monitor/break sensor with a Julet connector. I use a BLDC rear hub. I have replaced/bought the controller 3 times and the last time it worked normally. Thanks Bro
youe controller is spitting out phase output in the reverse order., spinning the motor backwards, and tghe one way clutch just keeps spinning./not engaging because it is a one way clutch. Reset your controller with the self learning plug or just physiically swap your phase wires around if you want a cowboy method.
@@steveshea6148 I tried changing one of the motor rotation phases to normal. but I complained to the seller and it was replaced with a new one... Now it runs normally with about 500 km on the odometer. Thanks for the advice
When I first learned these motors had nylon plastic planetary gears, I thought I might swap them out for steel gears. After some time to take my motor apart, it appeared to me that the gears are not so difficult or expensive to replace when worn and the nylon plastic gears are much quieter than the metal gears. I think you've done a great job on your videos showing us how these powerful little motors work and can be serviced back to good as new again.
Thanks as always for the kind words - they can be replaced in around an hour if all goes well and you don't have to clean *too* thoroughly*
Thanks for this video it really helped me right now to service my motor, thought it was complex but I did it and eliminated the weird noise I was hearing
Glad it helped
Tip: Have an old speaker near to hand for keeping bits safe as they come off. Just stick them to the magnet, a quick win!!
Great idea, thankyou!
I was looking at you tear my wheel apart. Its exactly the same except for the tyre brand. I suspect there is a problem with mine too, so best I take it off and have a look. Thanks for showing us how.
My pleasure!
This Sound comes from Losing 1 or more Power Fase going to the engine, it caused by the controller or Weak Connections of Power cables
Possibly! This one was a dodgy clutch, but it does sound very similar:)
My motor was vibrating so I took it apart and re greased it, the vibration practically went away but when I went on flat grass it came back and I was back to square 1. Any suggestions please?
@@keyboardpatriot hall sensors!
@@EbikeRepairsThanks! Can that be fixed and if it can how do I do it?
Man I had a motor like this it made like this noice but when it was running lets say it was kinda running tho making that weird noice and I couldnt get it anymore off the like gears do you have a tip to take that thing off without the weird tool u have
Hammer and lots of tapping!
I intend to change the bearings of my motor, the one on the cassette side is shaky while the other is perfect, the only issue now is how to get it out as I don’t have the right tool, do you think is should just let the bearing stay?
Your local bike shop should have a bearing extractor, you could ask them for help? It makes sense to change it 'while you're in there'
what kind of mechanism is in the clutch?
The planetary gears around a freewheeling clutch
Sprag clutch, one way bearing
sprag clutch.
I recently bought a rear hub motor from ebay, but the rear cassette won't spin backwards after tightening it onto the hub, any ideas what it could be? it spins freely off the wheel but as soon as i tightening it i locks solid, and won't spin backwards, the company sent a replacement cassette and that one is doing the same problem, any advice would be much appreciated.
You need a spacer behind the cassette! Bottom bracket shims work perfectly.
@@EbikeRepairs On Bafang motor diagram it shows the washer that has the locking bit on it, reversed from what the motor in the video has. The locking bit sticks outward and sits inside the forks.
probably need a spacer ring between the cassette and the hub. the end of the hub is jamming onto the cassette gears, sounds like.
Dude! How old is the bike??!! Regular maintenance is the key to longevity like everything else.
A delivery bike...
How is the throttle thing you used to text the motor designed? I would love to make one for my shop.
It's just an old ebike controller, brainpower with s866 display with integrated throttle...
s.click.aliexpress.com/e/_DFvJPJZ
@@EbikeRepairs thanks!!
mine is doing a similar noise to the left side but wheel spins as normal when motor is not engaged but soon as i peddle even with motor off the noise come back also my disc brake come loose as soon as it started i thought that was the noise till i tighten it back up so im thinking its the bearing closest to disc brake has given up after 3 year/ what are your thoughts?
after taken apart im afraid it was the gears it has the odd tooth iver missing or warped looks like most of grease has dried up
Possibly time for a new motor, if it needs bearings and gears etc.
@@EbikeRepairs i spent a few days teaching me self and i was able to replace broken parts and fully refurbish the rest runs like day 1
@@christopher-tg5zv fantastic news! Well done :) it's not too hard but very time consuming
@@EbikeRepairs iv even been hired to do other bikes and made some cash as iv found nearest hub service cost from £200 and up depending on brand not including replacement parts
Du bist ja ein "Feinmechaniker", nicht wahr ?
Having see the mess on the rim etc. I suspect I would have worn gloves....
I did wash my hands 3 days later 😄😄
one way clutch has failed on the wifes bike, shes not said anything I dont think shes even noticed...
In the no assist way, or the no freewheel way?
I experienced a problem that suddenly the direction of the BLDC motor's rotation changed so that the motor rotated but the wheels did not rotate. Has anyone ever experienced something like that?
Sometimes self learn wires on controller have shorter and need re learning I correct direction
@@EbikeRepairs My controller doesn't have a self learning wire. the only thing there is is a cable to the BLDC motor/hall sensor and to the SW900 LCD monitor/break sensor with a Julet connector. I use a BLDC rear hub. I have replaced/bought the controller 3 times and the last time it worked normally.
Thanks Bro
youe controller is spitting out phase output in the reverse order., spinning the motor backwards, and tghe one way clutch just keeps spinning./not engaging because it is a one way clutch. Reset your controller with the self learning plug or just physiically swap your phase wires around if you want a cowboy method.
@@steveshea6148 I tried changing one of the motor rotation phases to normal. but I complained to the seller and it was replaced with a new one... Now it runs normally with about 500 km on the odometer. Thanks for the advice
did you fix it
Yes I did 👍